I tend to eat unhealthy snacks and feel bad about it afterwards - any suggestion?

So as the title says i often tend to get a little snack here and there, but usually I don't even enjoy the actual snack. Right after I've eaten the snack, I feel bad about it.

So my question is to you fellas; Is there any solution for this, that makes it easier not to snack at all, or not feel bad it about?